1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45829699867227571457f61f114f54f44af46b94b59896a159211e4d7335982. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9018c0f1-7c2c-40fa-ab33-1fe4509425fb.json and https://artists.proofprofile.net/proofs/artist/9018c0f1-7c2c-40fa-ab33-1fe4509425fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c11d4c77b464d6260d3457a1278dcaf6cd43e3f39405cd3921a75b02d1715b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI89700229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed2bacb1f025983ce320932405520737e2d20d366820c42828f705775573c99. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI89700233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db6c716c24eab8eb2fd572d6df9ff59ff4a04d80a925b23d07e1313c75832ed. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI89700234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f40bd9124b7975b26033876418b591ad5b76cd8fb518aa44f79e7e58e60eb8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI89700239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0847328c7412317384d5c72a129d3095f3ba48e5efdad77994d525c896677185. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI87200309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff86569bde7f6d0fbf92e24e11c1939fe851703ced3f1eaed87dedc3adc5f2fc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI87200310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758ee8bdcc86ea7f511d28537ac3c6c696f77ba7e530db4f1bf450def5d2e257. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI87200311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9faaa18915330ddcd3475dc4a5e27a5903777a9abe67a5a95441647660be826b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI87200312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608a473ed7e9e1e6a8acbc0cabe0b152b8ddf67d388092912c38922e27fe0ceb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI87200313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773744cfb4b1febf97e85f7ff465f21cfb5756dda6b57a0a75b309ec52bbacaf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI87300378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588eb0b18f80e0c23a2ad7db7b493de8d69bab2de906282c7afe2f7a3d80107d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI87300379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4d8d44108bc4a165b70bb9cf5c93ccf28e8d0822d6bce706eeb18b7ec8f23e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:26:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI87300381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc939a21c6108118d59b84881c10b7419117c20f83e7e51872fb52a5239f40fa. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI87300382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedd8efc784aab66a72d32e4f7e99d6f6baf326d800653f7a2cdd74559484282. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI87300383.
Well-Matched: The Best Of Merl Saunders & Jerry Garcia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69735ec564a84a91d58b5acf14a9510d0c74b3891f4b05df53cb5758376ae8ea. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI88800222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedd8efc784aab66a72d32e4f7e99d6f6baf326d800653f7a2cdd74559484282. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI87300383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bace2ead67bcb9f4dc802723e6ecce465ab7891c98d2c601a7ede03dafbf924. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI87300369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773744cfb4b1febf97e85f7ff465f21cfb5756dda6b57a0a75b309ec52bbacaf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI87300378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608a473ed7e9e1e6a8acbc0cabe0b152b8ddf67d388092912c38922e27fe0ceb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI87200313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c11d4c77b464d6260d3457a1278dcaf6cd43e3f39405cd3921a75b02d1715b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI89700229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e00027b9c55cad2a146c1da06c4e6c068117facb87abb067ab1772f63ceb34b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI80600031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a217d158714ae06034b61d3892897a778ca8c276240e0ce41e22f3074fbb0c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI87300370.